Issue #3477102 by orom: Deprecated: explode(): Passing null to parameter #2...

Issue #3477102 by orom: Deprecated: explode(): Passing null to parameter #2 ($string) error when managing display of Shipment type

commerce_easypost.module

@@ -43,7 +43,6 @@ function commerce_easypost_entity_base_field_info(EntityTypeInterface $entity_ty
         'uri_scheme' => 'private',
         'target_type' => 'file',
         'file_directory' => 'easypost-forms',
-        'file_extensions' => 'pdf png jpg jpeg zpl tiff gif',
         'description_field' => TRUE
       ])
       ->setDisplayConfigurable('view', TRUE)